{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T22:18:44Z","timestamp":1759961924095},"reference-count":42,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2010,7,20]],"date-time":"2010-07-20T00:00:00Z","timestamp":1279584000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Fonds de Recherche en Sant\u00e9 du Qu\u00e9bec"},{"name":"Foundation of stars Children's Health Research"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pediatric Pulmonology"],"published-print":{"date-parts":[[2010,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Lung development is strongly influenced by its state of distension. For instance, increasing distension induced by fetal tracheal occlusion (TO) stimulates lung development. In contrast, oligohydramnios (OH) reduces lung distending forces and results in lung hypoplasia. We hypothesize that Rho\/Rho\u2010associated kinase (ROCK) pathway plays an important role as mechanosensor in vivo acting either directly or indirectly in the translation of increased distension into acceleration of lung growth. TO was done in fetal mice sacrificed either 3 or 24\u2009hr later; in a subset of dam, fasudil, a specific ROCK inhibitor, or vehicle was injected intra\u2010peritoneally. OH was done by puncture of the amniotic sac. ROCK2 protein levels were assessed by Western blot and immunohistochemistry (IHC); lung development was assessed by measuring the generation of distal respiratory airway. Significant differences were found in ROCK2 protein levels between TO and Sham\u2010TO at 3 and 24\u2009hr, but not for ROCK1. Indeed, IHC revealed that ROCK2 staining was sparse and restricted to a few mesenchymal cells in Sham\u2010TO, whereas it was strong in acini of TO lungs. OH lungs expressed lower levels of ROCK2 in the acini when compared to untouched controls. In fasudil\u2010treated animals, the degree of lung development following TO was significantly lower than in the group injected with vehicle. At the dose regimen used, fasudil did not affect normal lung development, as observed in the untouched animals. In summary, ROCK2 protein levels was affected by the degree of lung expansion and blunting ROCK activity abolished the response to increased lung distension, suggesting that ROCK is a key regulator in TO\u2010induced accelerated lung development. Pediatr Pulmonol. 2010; 45:966\u2013976. \u00a9 2010 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ppul.21266","type":"journal-article","created":{"date-parts":[[2010,7,20]],"date-time":"2010-07-20T21:11:31Z","timestamp":1279660291000},"page":"966-976","source":"Crossref","is-referenced-by-count":18,"title":["ROCK2 is involved in accelerated fetal lung development induced by in vivo lung 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